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=item getpriority WHICH,WHO
X<getpriority> X<priority> X<nice>

Returns the current priority for a process, a process group, or a user.
(See L<getpriority(2)>.)  Will raise a fatal exception if used on a
machine that doesn't implement L<getpriority(2)>.

C<WHICH> can be any of C<PRIO_PROCESS>, C<PRIO_PGRP> or C<PRIO_USER>
imported from L<POSIX/RESOURCE CONSTANTS>.

Portability issues: L<perlport/getpriority>.

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